Look up inside your pinbox where the 7 way cable goes through. You will see the bottom of your closet floor and a hole in the frame where the 7 way cable goes through.
I cut 2" styrofoam and packed it in there to insulate it, then used gorilla tape to seal the 7 way cable hole.
I also used gorilla tape to seal around the perimeter where the filion (vinyl surface material) meets the pinbox to seal out the elements for when you are driving.
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